I was about to report the same bug with the 125 build, as upon exiting the program doesn't ever fully close until I CTRL+Shift+ESC to bring up Task Manager. Then it crashes and provides the following wall of text :
Problem signature:
Problem Event Name: APPCRASH
Application Name: Construct2.exe
Application Version: 2.0.0.0
Application Timestamp: 516429ee
Fault Module Name: Construct2.exe
Fault Module Version: 2.0.0.0
Fault Module Timestamp: 516429ee
Exception Code: c0000005
Exception Offset: 00000000003fee15
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 3081
Additional Information 1: 8a3f
Additional Information 2: 8a3f09adb6b71b3cc86e302f9701049f
Additional Information 3: c50d
Additional Information 4: c50d990bc6ad6444c0ae2dc2f2366f05